Determining errors in force measurements for colloids close to contact

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dc.authorid0000-0001-9406-0220
dc.contributor.authorYucel, Harun
dc.date.accessioned2026-02-28T12:17:41Z
dc.date.available2026-02-28T12:17:41Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractDue to diffraction patterns in light microscopy, the overlapping of colloid images introduces minor errors in determining particle positions, which affecting the accuracy of observing interactions between colloids near contact. This study quantitatively investigates the errors arising from the overlapping effect in force measurements between two closely positioned colloids using digital video microscopy (DVM). For this aim, computer simulations were conducted to obtain the positions of two optically trapped colloids interacting based on a force model and particle images were generated as a time series using experimental particle intensity profiles for two different particle sizes. These generated images were analyzed using tracking algorithms from the literature and the interaction forces were extracted and compared with theoretical force values. The results demonstrated that diffraction patterns significantly influence the accuracy of particle position detection and interaction force calculations. Large diffraction patterns and intensity fluctuations in an image introduce significant errors. However, these errors can become significantly smaller in the presence of large forces and may therefore be considered negligible.
dc.description.sponsorshipTUBITAK
dc.description.sponsorshipThis work was supported by open access funding from TUBITAK
dc.identifier.doi10.1007/s00339-025-08668-8
dc.identifier.issn0947-8396
dc.identifier.issn1432-0630
dc.identifier.issue7
dc.identifier.scopus2-s2.0-105007457860
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s00339-025-08668-8
dc.identifier.urihttps://hdl.handle.net/20.500.12403/5920
dc.identifier.volume131
dc.identifier.wosWOS:001504285600004
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofApplied Physics A-Materials Science & Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260218
dc.subjectForce measurement
dc.subjectColloid interactions
dc.subjectTracking
dc.subjectSimulation
dc.titleDetermining errors in force measurements for colloids close to contact
dc.typeArticle

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